Extrusion

'The effect of extrusion on nutrients and the potential interaction of extrusion and protein sources have not been studied extensively in pet food.' © GettyImages/Compassionate Eye Foundation/Martin Barraud/OJO Images Ltd

Extrusion enhances amino acid digestibility in grain-free pet food

By Jane Byrne

A study examining the effects of single and twin thermal screw extrusion on the protein quality of grain-free pet foods including animal- or plant-based protein ingredients found that amino acid digestibility increases after extrusion compared to raw...

© GettyImages/Robert Pavsic

Tunicate meal does not compromise pellet quality

By Jane Byrne

Nofima, in the hunt for new and sustainable fish feed proteins, has been testing the technical quality of tunicate meal, along with its nutritional constraints, since both determine possible inclusion levels in fish feed.